Why do so many people believe in an Invisible World behind this one? Scientists a parallel universe? Religions an afterlife? Others ';just something? Perhaps for observations we cannot explain? Some are psychological, e.g. the nature, storage, and conveyance of the information implicit in ghosts, hunches, premonitions and hypnosis; and some are material the behaviour of particles on a very small scale in physics laboratories. Each hints at spatial or temporal derangement. Space and Time are the indivisible foundations of physics. Everything that exists has a location and duration; physics concerns nothing without both. We can suppose the universe bound not by a physical framework of space-time but as containing within itself all Space and all Time - with a little more besides. Another world is not a baseless idea.
